Touch display apparatus and touch detection method

Patent metadata

Field	Value
Publication number	US-12314511-B2
Application number	US-202218576528-A
Country	US
Kind code	B2
Filing date	Jul 4, 2022
Priority date	Jul 7, 2021
Publication date	May 27, 2025
Grant date	May 27, 2025

Abstract

An example touch display apparatus includes a touch display panel including one or more touch areas. Each touch area can include touch structures, where each touch structure includes first touch electrodes arranged along a first direction and second touch electrodes arranged along a second direction. Each first touch electrode can include first electrode blocks arranged along the second direction. Each second touch electrode can include second electrode blocks arranged along the first direction. The display apparatus can further include at least one touch driver chip, where one touch driver chip is electrically connected to a touch signal line connected to touch structures in one touch area.

First claim

What is claimed is:

1. A touch display apparatus, comprising:
a touch display panel, wherein the touch display panel comprises at least one touch area, each of the at least one touch area comprises a plurality of touch structures, each of the plurality of touch structures comprises a plurality of first touch electrodes arranged along a first direction and a plurality of second touch electrodes arranged along a second direction, the plurality of first touch electrodes and the plurality of second touch electrodes are disposed at a same layer and are insulated, and the first direction intersects the second direction, wherein:
each first touch electrode comprises a plurality of first electrode blocks arranged along the second direction, two adjacent first electrode blocks are connected through a connection part, and each first touch electrode is electrically connected to a respective touch signal line; and
each second touch electrode comprises a plurality of second electrode blocks arranged along the first direction, and the plurality of second electrode blocks in a respective second touch electrode are electrically connected to a respective touch signal line; and

at least one touch driver chip, wherein each of the at least one touch driver chip is electrically connected to a touch signal line connected to touch structures in one touch area;
wherein an orthographic projection of a touch signal line on a plane on which the touch display panel is located runs through an orthographic projection of a plurality of first touch electrodes that are on the touch display panel and that are arranged along the first direction on the plane on which the touch display panel is located.

2. The touch display apparatus according to claim 1 , wherein
the touch display panel comprises a plurality of touch areas, and the plurality of touch areas are arranged along the second direction.

3. The touch display apparatus according to claim 1 , wherein
the plurality of first touch electrodes and the plurality of second touch electrodes are multiplexed as common electrodes; and
the touch display panel further comprises a sub-pixel, the sub-pixel comprises a pixel electrode, and an orthographic projection of each pixel electrode on a plane on which the touch display panel is located is located in an orthographic projection of a first touch electrode or a second touch electrode on the plane on which the touch display panel is located.

4. The touch display apparatus according to claim 3 , wherein
there is a gap between orthographic projections of any two adjacent pixel electrodes on the plane on which the touch display panel is located, and edges of orthographic projections of the first touch electrode and the second touch electrode on the plane on which the touch display panel is located are located in the gap.

5. The touch display apparatus according to claim 1 , wherein
patterns of the plurality of first electrode blocks after translation coincide, and patterns of the plurality of second electrode blocks after translation coincide.

6. The touch display apparatus according to claim 1 , wherein the plurality of first touch electrodes and the plurality of second touch electrodes are self-capacitance touch electrodes.

7. The touch display apparatus according to claim 1 , wherein the first touch electrode is a touch sensing electrode, and the second touch electrode is a touch driving electrode.

8. A touch display apparatus, comprising:
a touch display panel, wherein the touch display panel comprises a plurality of touch areas, each of the plurality of touch areas comprises a first touch area and a second touch area, and the first touch area and the second touch area respectively comprise a plurality of touch structures; and
a plurality of touch driver chips, wherein each of the plurality of touch driver chips comprises a first touch chip and a second touch chip, the first touch chip is electrically connected to a touch signal line connected to a touch structure in the first touch area, and the second touch chip is electrically connected to a touch signal line connected to a touch structure in the second touch area;
wherein each of the plurality of touch structures comprises a plurality of first touch electrodes and a plurality of second touch electrodes, the plurality of first touch electrodes are arranged along a first direction, the plurality of second touch electrodes are arranged along a second direction, the plurality of first touch electrodes and the plurality of second touch electrodes are disposed at a same layer and are insulated, and the first direction intersects the second direction;
each first touch electrode comprises a plurality of first electrode blocks arranged along the second direction, two adjacent first electrode blocks are connected through a connection part, and each first touch electrode is electrically connected to a respective touch signal line; and
each second touch electrode comprises a plurality of second electrode blocks arranged along the first direction, and the plurality of second electrode blocks in a respective second touch electrode are electrically connected to a respective touch signal line.

9. The touch display apparatus according to claim 8 , wherein
the plurality of touch areas are arranged in a same direction, and an arrangement direction of the plurality of touch areas intersects an extension direction of a touch signal line.

10. The touch display apparatus according to claim 8 , wherein
in a direction of a plane on which the touch display panel is located, an orthographic projection of a touch signal line runs through orthographic projections of a plurality of first touch electrodes arranged along the first direction on the touch display panel.

11. The touch display apparatus according to claim 8 , wherein
each of the plurality of touch structures comprises a plurality of first touch electrodes and a plurality of second touch electrodes, and the plurality of first touch electrodes and the plurality of second touch electrodes are alternately arranged in a second direction; and
each first touch electrode comprises first electrode blocks arranged along a first direction, each first electrode block is electrically connected to a respective touch signal line, and each second touch electrode comprises second electrode blocks arranged along the first direction, each second electrode block is electrically connected to a respective touch signal line, and the first direction intersects the second direction, wherein
each first electrode block comprises a first electrode part and a second electrode part that are arranged along the first direction, a width of the first electrode part in the second direction is less than a width of the second electrode part in the second direction, each second electrode block comprises a third electrode part and a fourth electrode part that are arranged along the first direction, and a width of the third electrode part in the second direction is greater than a width of the fourth electrode part in the second direction.

12. The touch display apparatus according to claim 11 , wherein
along the first direction, a width of a first electrode block in the second direction increases successively, and a width of a second electrode block in the second direction decreases successively.

13. The touch display apparatus according to claim 11 , wherein
a touch signal line comprises a first end part and a second end part, the first end part is electrically connected to a touch driver chip, and second end parts of a plurality of touch signal lines are aligned.

14. A touch display panel, wherein the touc

Assignees

• Huawei Tech Co Ltd

Inventors

• Mo Jiabao
• Zou Yang
• Zhang Junyong
• Kuo Tawei

Classifications

• G06F2203/04104

  Multi-touch detection in digitiser, i.e. details about the simultaneous detection of a plurality of touching locations, e.g. multiple fingers or pen and finger · CPC title

• G06F3/0412

  Digitisers structurally integrated in a display · CPC title

• G06F3/0443

  using a single layer of sensing electrodes · CPC title

• G06F3/04164 Primary

  Connections between sensors and controllers, e.g. routing lines between electrodes and connection pads · CPC title

• G06F3/0446

  using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes · CPC title